Been into quite a few off airfield sites now. I can definitely back up what Grainger says. I fly into a field close to home and know it quite well. I did a take off over some trees one-day and low and behold there was a wire running between two of them that I had never spotted before. Luckily I was light and managed to climb over it. Salutary lesson in recceing the route OUT as well.
Always a challenge to ensure you have thought of everything when you fly to a new site. Keeps your nav up to speed too. Never dropped into the wrong spot…..yet